The only thing that is putting me off from ordering it now is the $19 price tag, it's not a lot obviously, but I still feel it is overpriced for the content you get.
Sure you can potentially get like 100 hours of gameplay if you play it a lot, but it's just an expansion, you can't compare every expansion for every game out there and say that the $19 price is fine for every each one of them, every game is different.
And to those that think programming is so hard, I think you're the one that needs to learn that ^^
It's a combined effort, not one kid in the basement working his ass off for 25 hours a day (yeah, that's 25). You can say that for every little application ever made, say calculator, oh hell it took someone an hour to do, let's pay $5 for his tremendous efforts ? It has nothing to do with effort or the difficulty of the development, while it is very much appreciated, and believe me that we all love EU3 and will love HTTTT, some of us don't feel the need to pay for "effort", we want content and gameplay !
Anyways, I will eventually buy HTTT when the price drops a bit, or if I get extremely bored with EU3.. you know it, since I've bought quite a few games already..